Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Christian Berrier"'
Autor:
Agnès Martin-Mingot, Sébastien Thibaudeau, Jean-Claude Jacquesy, Fei Liu, Fabien Zunino, Marie-Paule Jouannetaud, Christian Bachmann, Christian Berrier
Publikováno v:
Journal of Fluorine Chemistry. 129:775-780
In HF/SbF 5 , in the presence of CCl 4 or NBS, unsaturated or hydroxylated piperidines yield difluoroanalogues in good yields. The ability to perform hydride abstraction on chloroderivatives, and the ability to form bridged bromonium ions from unsatu
Autor:
Alain Duflos, Jean-Claude Jacquesy, Ce´cile Lafitte, Christian Berrier, Jacques Fahy, Marie-Paule Jouannetaud, Yves Vidal, Fabien Zunino
Publikováno v:
Tetrahedron. 54:13761-13770
Reaction of vindoline 1a with NBS, NCS, H 2 O 2 in HF-SbF 5 yields 7β substituted (Br, Cl or OH)-20-fluoro-6,7-dihydrovindolines. These results imply reaction of the electrophile (Br + , Cl + and OH + equivalent) on the β-face of C-6 C-7 double bon
Autor:
Fabien Zunino, Jacques Fahy, Marie-Paule Jouannetaud, Jean-Claude Jacquesy, Christian Berrier, Alain Duflos, Jean-Paul Ribet
Publikováno v:
Journal of Fluorine Chemistry. 114:139-141
In HF-SbF 5 , reaction of various alkaloids with NBS, NCS, H 2 O 2 yields fluoroderivatives: anti-addition is observed at the C6C7 double bond with tabersonine, but a more complex reaction is operative with vindoline, leading to 7-substituted (Br,
Publikováno v:
ChemInform. 22
Synthesis of 2 and 4-aryl cyclohexenones and of hexahydrodibenzofuran derivatives is described. In anhydrous hydrogen fluoride at 0°C, 4-hydroxy-4 methylcyclohex-2 en-1 one 2 reacted to yield ketone 7 (43%). Reaction of ketone 2 with parabromophenol
Autor:
Jacques Fahy, Marie-Paule Jouannetaud, Alain Duflos, Jean-Paul Ribet, Christian Berrier, Jean-Claude Jacquesy, Fabien Zunino
Publikováno v:
ChemInform. 33
In HF-SbF 5 , reaction of various alkaloids with NBS, NCS, H 2 O 2 yields fluoroderivatives: anti-addition is observed at the C6C7 double bond with tabersonine, but a more complex reaction is operative with vindoline, leading to 7-substituted (Br,
Autor:
Fei Liu, Jean-Claude Jacquesy, Fabien Zunino, Christian Berrier, Christian Bachmann, Marie-Paule Jouannetaud, Sébastien Thibaudeau, Agnès Martin-Mingot
Publikováno v:
ChemInform. 40
In HF/SbF 5 , in the presence of CCl 4 or NBS, unsaturated or hydroxylated piperidines yield difluoroanalogues in good yields. The ability to perform hydride abstraction on chloroderivatives, and the ability to form bridged bromonium ions from unsatu
Publikováno v:
Tetrahedron. 47:6681-6688
Synthesis of 2 and 4-aryl cyclohexenones and of hexahydrodibenzofuran derivatives is described. In anhydrous hydrogen fluoride at 0°C, 4-hydroxy-4 methylcyclohex-2 en-1 one 2 reacted to yield ketone 7 (43%). Reaction of ketone 2 with parabromophenol
Publikováno v:
Tetrahedron. 46:827-832
In HF-SbF5, vincadifformine 1b reacts with H2O2 to yield a mixture (60%) of hydroxyderivatives 1c and 1d. 2,16-Dihydrovincadifformine 2a is more selectively hydroxylated at C-11 to give 2b (40%); in a similar reaction, 2d yields 2e (37%). Reaction of
Autor:
§ and Marie-Paule Jouannetaud, Jean-Claude Jacquesy, Christian Berrier, Alain Duflos, Jacques Fahy, Jean-Paul Ribet, Fabien Zunino
Publikováno v:
Journal of the American Chemical Society. 119:8576-8577
Publikováno v:
Tetrahedron Letters. 27:4565-4568
In SbF 5 -HF, indolines and indoles are hydroxylated on the aromatic ring, protonated hydrogen peroxide H 3 O 2 + reacting on the protonated substrates.